JP7145090B2 - roll screen - Google Patents

Description

The present invention relates to roll screens.

A conventional roll screen is disclosed in Japanese Patent Application Laid-Open No. 2002-220982 (Patent Document 1). In the roll screen disclosed in the document, a case is fixed to a bracket on one end side of the winding pipe, and a shaft support is pivotally supported in the case. Rotation of the shaft receiver is transmitted from a pulley that is rotationally driven by an operation cord. A shaft cap attached to one end of the winding pipe is inserted into the shaft receiver so as to be integrally rotatable.

According to this, by operating the operation cord, the rotation of the pulley is transmitted to the shaft receiver, and the winding pipe can be rotationally driven via the shaft cap.

Japanese Patent Application Laid-Open No. 2002-220982

In the conventional roll screen as disclosed in Patent Document 1, when inserting the shaft cap of the winding pipe into the shaft receiver, the shaft cap is inserted all the way into the shaft receiver. There is a problem that confirmation depends only on human senses.

SUMMARY OF THE INVENTION Accordingly, the present invention has been made in view of such problems, and an object thereof is to provide a roll screen capable of mechanically confirming correct attachment between a winding pipe and a bracket. It is in.

In order to solve the above problems, according to a first aspect of the present invention, there is provided a bracket, a winding pipe rotatably supported by the bracket, and one end of which can be wound and unwound around the winding pipe. a connected screen; a rotating shaft rotatably supported by the bracket; a winding shaft that rotates integrally with the winding pipe and is mounted on the rotating shaft to rotate integrally with the rotating shaft; A switch capable of switching such that the rotation of the rotating shaft is restricted when the winding shaft is not attached to the rotating shaft, and the rotation of the rotating shaft is permitted when the winding shaft is attached to the rotating shaft. A roll screen is provided, characterized in that it comprises means.

According to this configuration, by providing a switching means capable of switching between regulation and permission of rotation of the rotating shaft, rotation of the rotating shaft can be prevented if the winding shaft is not correctly attached to the rotating shaft (wrong attachment). is regulated. Therefore, it is possible to mechanically confirm the correct attachment between the winding pipe and the bracket. Confirmation of such correct attachment also leads to prevention of falling of the winding pipe.

Various applications are possible for the present invention. For example, the switching means may include an engaging portion provided on a case fixed to the bracket, an engaged portion provided on the rotating shaft and capable of being engaged with the engaging portion, and the engaging portion. an engaging member capable of engaging with the locked portion and locking or unlocking the locking portion and the locked portion, wherein the engaging member The rotation of the rotating shaft may be restricted when the portion and the engaged portion are engaged with each other, and the rotation of the rotating shaft may be permitted when the engagement between the engaging portion and the engaged portion is released. . By engaging or disengaging the engaging member with the locking portion and the locked portion, the locking portion and the locked portion are locked or unlocked to rotate the rotating shaft. can be switched between regulated or allowed.

Further, the engaging member is rotatably connected to the rotating shaft, and when the winding shaft is attached to the rotating shaft, the engaging member abuts against the winding shaft and is locked with the locking portion. You may make it rotate in the direction released. It is possible to prevent the rotating shaft from rotating unless the winding shaft is attached to the rotating shaft until it abuts against the engaging member.

Moreover, the said latching|locking part may be provided with two or more by the rotation direction of the said rotating shaft. By providing the locking portions at a plurality of positions, the engaging member can be engaged with the locking portions regardless of the rotation angle of the rotating shaft, and the rotation of the rotating shaft can be restricted.

Further, the engaging member is provided in the case so as to be movable in the radial direction of the rotating shaft, and the engaging member is inserted through the engaging portion so as to be insertable into and removable from the engaged portion. When inserted into the locked portion, the locking portion and the locked portion are locked, and when removed from the locked portion, the locking portion and the locked portion are locked. The stop may be released. By moving the engaging member in the radial direction of the rotating shaft, it is possible to switch between locking and unlocking of the locking portion and the locked portion.

Further, the winding shaft may be provided with a pressing piece that presses the engaging member so as to slide. Therefore, there is no need to separately provide a mechanism for sliding the engaging member other than the winding shaft.

Further, the switching means includes a sliding member disposed on the rotating shaft and sliding in the axial direction, and when the winding shaft is attached to the rotating shaft, the sliding member slides in the axial direction. The engaging member may be disengaged from the engaged portion by moving. The engagement member can be reliably slid by the sliding member.

Further, a support member fixed to a roll screen attachment target (a window frame or a wall) may be further provided, and the bracket may be supported by the support member so as to be relatively movable. Since the position of the bracket can be adjusted by moving the bracket and the support member relative to each other, the position of the bracket can be easily adjusted without the need to remove the screws, which is required for fixing with screws.

According to a second aspect of the present invention, a bracket, a winding pipe rotatably supported by the bracket, a screen one end of which is connected to the winding pipe so as to be wound and unwound, A roll screen comprising: a winding shaft that rotates integrally with the winding pipe and is rotatably mounted on the bracket; and the winding shaft when the winding shaft is not mounted on the bracket. A roll screen is provided, comprising a switching means capable of switching to restrict rotation and allow rotation of the winding shaft in a state where the winding shaft is mounted.

According to such a configuration, by providing a switching means capable of switching between restricting and allowing rotation of the winding shaft, rotation of the winding shaft can be prevented if the winding shaft cannot be correctly attached (wrong attachment). Regulated. Therefore, it is possible to mechanically confirm the correct attachment between the winding pipe and the bracket. Confirmation of such correct attachment also leads to prevention of falling of the winding pipe. Applications similar to those of the first aspect of the present invention are also possible.

ADVANTAGE OF THE INVENTION According to this invention, the roll screen which can confirm the correct attachment of a winding pipe and a bracket mechanically is provided. Other effects of the present invention will also be described in the mode for carrying out the invention, which will be described later.

It is the front view which showed roughly the whole structure of the roll screen 100. FIG. FIG. 10 is a view of the operation side bracket 110-1 and its vicinity, where (a) is a partial cross-sectional view seen from the front and (b) is a cross-sectional view taken along line AA of (a). FIG. 2 is a diagram for explaining the operation of the roll screen 100, (a) is a partial cross-sectional view seen from the front, and (b) is a BB cross-sectional view of (a). It is a figure which shows the structure of the roll screen 200 of 2nd Embodiment. It is a figure which shows the structure of the roll screen 300 of 3rd Embodiment, (a) shows the state which the engaging member 353 has latched to the latching|locking part 351 of the top, (b) shows the engaging member 353 is locked to the horizontal locking portion 351. FIG. It is a figure which shows the structure of the roll screen 400 of 4th Embodiment, (a) shows the state before mounting|wearing the winding shaft 421 to the rotating shaft 440, (b) shows the state before mounting the winding shaft 421 on the rotating shaft 440. shown attached to the It is a figure which shows the structure of the roll screen 500 of 5th Embodiment, (a) shows the state before mounting|wearing the rotating shaft 540 with the winding shaft 521, (b) shows the state before mounting the winding shaft 521 on the rotating shaft 540. shown attached to the

Preferred embodiments of the present invention will be described in detail below with reference to the accompanying drawings. In the present specification and drawings, constituent elements having substantially the same functional configuration are denoted by the same reference numerals, thereby omitting redundant description.

The overall configuration of the roll screen 100 of the present embodiment will be described with reference to FIGS. 1 and 2. FIG. FIG. 1 is a diagram schematically showing the overall configuration of a roll screen 100. As shown in FIG. 2A and 2B are views showing the vicinity of the operation side bracket 110-1, where (a) is a partial cross-sectional view seen from the front and (b) is a cross-sectional view taken along the line AA of (a).

1 and 2, the roll screen 100 includes a bracket 110, a winding pipe 120 rotatably supported by the bracket 110, and one end connected to the winding pipe 120 so as to be wound and unwound. a rotating shaft 140 rotatably supported by the bracket 110; and a winding shaft 121 that rotates integrally with the winding pipe 120 and is mounted on the rotating shaft 140 to rotate integrally with the rotating shaft 140. , the rotation of the rotating shaft 140 is restricted when the winding shaft 121 is not attached to the rotating shaft 140, and the rotation of the rotating shaft 140 is allowed when the winding shaft 121 is attached to the rotating shaft 140. and a switching means 150. Hereinafter, each component of the roll screen 100 of this embodiment will be described.

(Bracket 110)
The bracket 110 is attached to an attachment target such as a wall or window frame to rotatably support the winding pipe 120 . As shown in FIG. 1, the bracket 110 is formed in an L shape, and includes an operation-side bracket 110-1 provided with an operation portion for operating the rotation of the winding pipe 120, and a reverse bracket 110-1 provided with no operation portion. and an operation side bracket 110-2. One end of the winding pipe 120 is rotatably supported by the operation side bracket 110-1 via the operation portion. Further, the take-up pipe 120 is directly rotatably supported on the non-operation side bracket 110-2.

As shown in FIG. 2, a first case 160 and a second case 161 that house an operation mechanism for operating the winding pipe 120 are attached to the operation side bracket 110-1. The operating mechanism includes pulleys 162 rotatably arranged in the first case 160 and the second case 161, an operating chain 163 wound around the pulleys 162 to rotate the pulleys 162, and the first case 160. and a rotary shaft 140 rotatably supported in the .

The pulley 162 rotates the rotating shaft 140 while the first connecting member 164 or the second connecting member 165 that rotates together loosens the clutch spring 166 . The clutch drum 167 is non-rotatably supported by the first case 160 , and the rotation from the winding shaft 121 side is controlled by the first connecting member 164 or the second connecting member 165 fastening the clutch spring 166 to the clutch drum 167 . to disable rotation. Therefore, the rotation of the pulley 162 is transmitted to the winding shaft 121 , but the rotation from the winding shaft 121 is not transmitted to the pulley 162 .

As shown in FIG. 2(a), the operating chain 163 is wound around the pulley 162 and can drive the pulley 162 to rotate. When the front side of the operation chain 163 is pulled down, the pulley 162 rotates in the direction in which the screen 130 is raised, and when the back side is pulled down, the pulley 162 rotates in the direction in which the screen 130 is lowered.

(Winding pipe 120)
The winding pipe 120 raises and lowers the screen 130 . As shown in FIG. 1, the winding pipe 120 is connected to the upper end of the screen 130 so that it can be wound and unwound. One end of the winding pipe 120 is provided with a winding shaft 121 that rotates integrally with the winding pipe 120, as shown in FIG. 2(a). The rotation center of the winding shaft 121 and the winding pipe 120 are the same. The winding shaft 121 may be formed integrally with the winding pipe 120 or may be configured separately and attached to the end of the winding pipe 120 .

The winding shaft 121 can be attached to the rotating shaft 140 by being inserted into an insertion hole 140a of the rotating shaft 140, which will be described later, as indicated by an arrow C in FIG. 2(a). The take-up shaft 121 has a square cross section as shown in FIG. 2(b). Many ends of the winding pipe 120 are rotatably supported by the non-operation side bracket 110-2, as shown in FIG.

(screen 130)
The screen 130 closes or opens windows, room openings, and the like. The upper end of the screen 130 is connected to the winding pipe 120 so as to be wound up and unwound as shown in FIG. A weight bar 131 is attached to the lower end of the screen 130 .

(Rotating shaft 140)
The rotating shaft 140 transmits the rotation of the pulley 162 to the winding pipe 120 . The rotating shaft 140 is rotatably supported by a first case 160 fixed to the operation-side bracket 110-1, as shown in FIG. 2(a). As shown in FIG. 2B, an insertion hole 140a having a rectangular cross section is formed in the axial center of the rotary shaft 140 so as to extend in the axial direction. A winding shaft 121 is mounted in the insertion hole 140a and can rotate together.

(Switching means 150)
The switching means 150 regulates the rotation of the rotating shaft 140 when the winding shaft 121 is not attached to the rotating shaft 140, and allows the rotation of the rotating shaft 140 when the winding shaft 121 is attached to the rotating shaft 140. It is something to do. As shown in FIG. 2, the switching means 150 has an engaging portion 151 provided on the first case 160 fixed to the operating side bracket 110-1 and an engaging portion 151 provided on the rotary shaft 140. An engaging portion 152 that can be engaged, an engaging portion that can be engaged with the engaging portion 151 and the engaged portion 152, and an engaging portion that can engage or unlock the engaging portion 151 and the engaged portion 152. The engaging member 153 restricts the rotation of the rotating shaft 140 when the locking portion 151 and the locked portion 152 are locked, and the locking portion 151 and the locked portion 152 are engaged. It is configured to allow rotation of the rotating shaft 140 when unlocked.

The locking portion 151 is provided on the side of the first case 160 facing the rotating shaft 140 as shown in FIG. 2(a). As shown in FIG. 2B, the engaging portion 151 is a groove having a square cross section extending axially from the vicinity of the end portion of the rotating shaft 140, and is formed at one location in the circumferential direction.

As shown in FIG. 2(a), the engaged portion 152 is formed so as to extend in the axial direction from the vicinity of the end portion of the rotating shaft 140 on the side where the winding shaft 121 is inserted. As shown in FIG. 2(b), the locked portion 152 penetrates from the insertion hole 140a to the outer diameter portion at one point in the circumferential direction of the rotating shaft 140. As shown in FIG.

The engaging member 153 is rotatably connected to the engaged portion 152 as shown in FIG. 2(a). When the winding shaft 121 is not attached to the rotating shaft 140, the engaging member 153 is in a position in which one end 153a is engaged with the engaging portion 151 and the other end 153b is inserted into the insertion hole 140a. When the winding shaft 121 is attached to the rotating shaft 140, the other end 153b of the engaging member 153 abuts on the winding shaft 121 and rotates in the direction in which the engagement with the locking portion 151 is released. , are housed in the locked portion 152 .

The configuration of the roll screen 100 of the present embodiment has been described above. Next, the operation of the roll screen 100 of this embodiment will be described with further reference to FIG. 3 in addition to FIG. 3A and 3B are diagrams for explaining the operation of the roll screen 100. FIG. 3A is a partial sectional view seen from the front, and FIG. 3B is a BB sectional view of (a).

Before the winding shaft 121 is attached to the rotating shaft 140, as shown in FIG. 140a is inserted. Since the engaging member 153 is connected to the locked portion 152, the rotation of the rotating shaft 140 is restricted.

When mounting the winding shaft 121, the winding shaft 121 is inserted into the insertion hole 140a of the rotary shaft 140 as indicated by the arrow C in FIG. 2(a). Then, the other end 153b of the engaging member 153 comes into contact with the winding shaft 121, and engages in the direction in which the locking with the locking portion 151 is released, as indicated by the arrow D in FIG. 3(a). Member 153 rotates. When the winding shaft 121 is completely inserted into the insertion hole 140a and attached to the rotating shaft 140, the engaging member 153 is accommodated in the engaged portion 152. As shown in FIG. Therefore, the rotary shaft 140 is rotatable as indicated by the arrow E in FIG. 3B, and the operation chain 163 is operable.

(Effect of the first embodiment)
As described above, according to the present embodiment, the winding shaft 121 is not accurately attached to the rotating shaft 140 ( incorrect installation), the rotation of the rotating shaft 140 is restricted. Therefore, since it is possible to mechanically confirm that the winding pipe 120 and the bracket 110 are correctly attached, it is possible to prevent the winding pipe 120 from falling.

Further, by engaging or disengaging the engaging member 153 with the locking portion 151 and the locked portion 152, the locking portion 151 and the locked portion 152 can be locked or unlocked. , the rotation of the rotating shaft 140 can be switched between restricted and permitted.

Further, unless the winding shaft 121 is attached to the rotating shaft 140 until it abuts against the engaging member 153, the engaging member 153 does not rotate. Therefore, when the winding shaft 121 is not attached to the rotating shaft 140, the rotating shaft 140 can be prevented from rotating.

(Second embodiment)
The configuration of the roll screen 200 according to this embodiment will be described with reference to FIG. FIG. 4 is a diagram showing the configuration of the roll screen 200 of this embodiment. This embodiment differs from the first embodiment in the configuration of the operating side bracket 210-1. In this embodiment, the points different from the first embodiment will be mainly described. Constituent elements having substantially the same functional configuration are denoted by the same reference numerals, thereby omitting redundant description.

The roll screen 200 of this embodiment will be described with reference to FIG. The roll screen 200 further includes a support member 211 fixed to a roll screen mounting target such as a wall or a window frame, and the operation side bracket 210-1 is supported by the support member 211 so as to be relatively movable.

The support member 211 has a recess 211a into which the tip of the operation-side bracket 210-1 is inserted. Saw-toothed position adjusting means 211b and 210-1a are formed on the facing surfaces of the concave portion 211a and the front end of the operation-side bracket 210-1. It is possible to change the meshing position between the position adjusting means 211b of the recess 211a and the position adjusting means 210-1a of the operation side bracket 210-1. By moving the operation-side bracket 210-1 to change the engagement position between the position adjustment means 211b of the recess 211a and the position adjustment means 210-1a of the operation-side bracket 210-1, the position of the operation-side bracket 210-1 can be changed. can be adjusted.

(Effect of Second Embodiment)
As described above, according to the present embodiment, the operating side bracket 210-1 is moved left and right with respect to the support member 211, and the position adjusting means 210-1a and the position adjusting means 211b are engaged with each other. The position of the bracket 210-1 can be adjusted and fixed. Therefore, the position of the operation side bracket 210-1 can be easily adjusted without requiring an action such as removal of a screw unlike fixing with a screw. By making it possible to adjust the position of the operation side bracket 210-1 in this way, it is possible to adjust so that the winding shaft 221 is not incompletely inserted into the rotating shaft 240, and the winding shaft 221 can be rotated. It can be mounted precisely on the shaft 240 .

(Third embodiment)
The configuration of the roll screen 300 according to this embodiment will be described with reference to FIG. 5A and 5B are diagrams showing the configuration of the roll screen 300 of the present embodiment, in which (a) shows a state in which the engaging member 353 is engaged with the engaging portion 351 on the top, and (b) shows an engaging state. A state in which the member 353 is locked to the horizontal locking portion 351 is shown. This embodiment differs from the above-described first embodiment in that locking portions 351 are provided at a plurality of locations. In this embodiment, the points different from the above-described first embodiment will be mainly described. Constituent elements having substantially the same functional configuration are denoted by the same reference numerals, thereby omitting redundant description.

The operation-side bracket 310-1 of this embodiment is substantially similar to the operation-side bracket 110-1 of the first embodiment.

The roll screen 300 of this embodiment will be described with reference to FIG. As shown in FIG. 5, the first case 360 is provided with eight engaging portions 351 at regular intervals in the rotating direction of the rotating shaft 340 . For example, as shown in FIG. 5A, when the winding shaft 321 is disengaged from the rotating shaft 340 when the engaging member 353 is positioned upward, the upper locking portion 351 The engaging member 353 is locked.

5B, when the winding shaft 321 is disengaged from the rotating shaft 340 when the engaging member 353 is positioned horizontally, the locking portion 351 on the side is engaged. The joining member 353 is locked. In this manner, the engaging member 353 can be easily locked to the locking portion 351 without limiting the position where the winding shaft 321 is released from the rotating shaft 340 to a specific position. In addition, the number of locking portions 351 may be designed to be any number.

(Effect of the third embodiment)
As described above, according to the present embodiment, by providing the locking portions 351 at a plurality of positions, the engaging member 353 can be engaged with the locking portions 351 regardless of the rotation angle of the rotating shaft 340. As a result, the rotation of the rotating shaft 340 can be restricted.

(Fourth embodiment)
The configuration of the roll screen 400 according to this embodiment will be described with reference to FIG. 6A and 6B are views showing the configuration of the roll screen 400 of the present embodiment, in which FIG. 6A shows the state before the winding shaft 421 is attached to the rotating shaft 440, It is shown attached to a shaft 440 . This embodiment mainly differs from the first embodiment in the configuration of the switching means 450 . In this embodiment, the points different from the first embodiment will be mainly described. Constituent elements having substantially the same functional configuration are denoted by the same reference numerals, thereby omitting redundant description.

A roll screen 400 of this embodiment will be described with reference to FIG. In the switching means 450, as shown in FIG. 6, an engaging member 453 is provided in the first case 460 so as to be slidable in the radial direction. One end 453a of the engaging member 453 protrudes outside from the upper portion of the first case 460, contacts the outer circumference of the first case 460, and is restricted from further downward movement. The state of the engaging member 453 can be visually observed from the outside.

As shown in FIG. 6A, the other end 453b of the engaging member 453 is inserted through the locking portion 451 to the locked portion 452 when the winding shaft 421 is not attached to the rotating shaft 440. inserting. 6(b), the other end 453b of the engaging member 453 is disengaged from the engaged portion 452 when the winding shaft 421 is attached to the rotating shaft 440, and the engaging portion 451 are housed in

In the first embodiment, the locked portion 452 is formed up to the vicinity of the end of the rotating shaft 140 on the side where the winding shaft 121 is inserted. , the end of the rotating shaft 440 on the side where the winding shaft 421 is inserted.

The winding shaft 421 is provided with a pressing piece 421a that presses the engaging member 453 so as to slide. As shown in FIG. 6( a ), the pressing piece 421 a protrudes above the winding shaft 421 and has a size that allows it to be inserted into the engaged portion 452 of the rotating shaft 440 . As shown in FIG. 6(b), the pressing piece 421a has its upper end at the same position as the outer circumference of the rotating shaft 440 when it is inserted into the locked portion 452. As shown in FIG.

The configuration of the roll screen 400 of the present embodiment has been described above. The operation of roll screen 400 will be described below with reference to FIG. Before the winding shaft 421 is attached to the rotary shaft 440, the switching means 450 is in a state in which the other end 453b of the engaging member 453 is inserted into the engaged portion 452, as shown in FIG. 6(a). ing. Therefore, the rotating shaft 440 abuts against the other end 453b of the engaging member 453, and its rotation is restrained.

When mounting the winding shaft 421, the winding shaft 421 is inserted into the insertion hole 440a of the rotating shaft 440 so that the pressing piece 421a is inserted into the locked portion 452 as indicated by arrow C in FIG. 6(a). insert Then, the pressing piece 421a presses the other end 453b of the engaging member 453, and the engaging member 453 slides away from the engaged portion 452 as shown in FIG. 6(b). When the winding shaft 421 is completely inserted into the insertion hole 440 a and attached to the rotating shaft 440 , the pressing piece 421 a pushes the other end 453 b of the engaging member 453 up completely to the outside of the rotating shaft 440 . Therefore, the other end 453b of the engaging member 453 is disengaged from the engaged portion 452 and accommodated in the engaging portion 451, and the rotating shaft 440 becomes rotatable.

(Effect of the fourth embodiment)
As described above, according to the present embodiment, by moving the engaging member 453 in the radial direction of the rotating shaft 440, the engaging portion 451 and the engaged portion 452 are engaged and disengaged. You can switch.

Further, since the winding shaft 421 is provided with a pressing piece 421a that presses the engaging member 453 so as to slide, a mechanism for sliding the engaging member 453 is provided separately from the winding shaft 421. No need to set. Further, when the winding shaft 421 is attached to the rotating shaft 440, one end 453a of the engaging member 453 protrudes upward so that the state of the engaging member 453 can be visually observed from the outside. It can be grasped that it is completely attached to 440.

(Fifth embodiment)
The configuration of the roll screen 500 according to this embodiment will be described with reference to FIG. 7A and 7B show the configuration of the roll screen 500 of the present embodiment, in which FIG. 7A shows the state before the winding shaft 521 is attached to the rotating shaft 540, It is shown attached to a shaft 540 . This embodiment mainly differs from the fourth embodiment in the configuration of the switching means 550 . In this embodiment, the points different from the fourth embodiment will be mainly described. Constituent elements having substantially the same functional configuration are denoted by the same reference numerals, thereby omitting redundant description.

A roll screen 500 of this embodiment will be described with reference to FIG. As shown in FIG. 7, in the switching means 550, the engaged portion 552 is positioned at the end of the rotating shaft 540 on the side where the winding shaft 521 is inserted, like the engaged portion 152 of the first embodiment. It is formed up to the vicinity of the part. Further, the winding shaft 521 is not provided with the pressing piece 421a of the fourth embodiment, and has the same configuration as the winding shaft 121 of the first embodiment.

A sliding member 554 is provided in the insertion hole 540a of the rotating shaft 540 and the locked portion 552, as shown in FIG. An upper end 554 a of the sliding member 554 constitutes the outer peripheral surface of the rotating shaft 540 together with the rotating shaft 540 . The sliding member 554 is slidable in the axial direction of the rotating shaft 540 from the entrance side end 552 a of the locked portion 552 to the engaging member 553 . The sliding member 554 is separated from the engaging member 553 when positioned at the inlet side end portion 552 a of the locked portion 552 . A spring 555 is provided between the bottom portion 540b of the rotary shaft 540 and the sliding member 554 to bias the sliding member 554 in the direction in which the winding shaft 521 is inserted. The sliding member 554 can be pressed by the winding shaft 521 . When the upper end 554a of the sliding member 554 comes into contact with the other end 553b of the engaging member 553, it presses and causes the engaging member 553 to slide upward.

When the winding shaft 521 is inserted into the insertion hole 540a, the sliding member 554 is pressed by the winding shaft 521 and slides in the direction of the bottom portion 540b of the rotary shaft 540. When pulled out, the spring 555 slides toward the opening 540c at the entrance of the rotating shaft 540. As shown in FIG. The upper end 554a of the sliding member 554 presses the other end 553b of the engaging member 553 to slide the engaging member 553 upward.

The configuration of the roll screen 500 of the present embodiment has been described above. The operation of the roll screen 500 will be described below with reference to FIG. Before the winding shaft 521 is attached to the rotary shaft 540, the sliding member 554 is positioned at the entrance side end 552a of the locked portion 552, as shown in FIG. 554 is spaced apart from the engaging member 553 . Therefore, the other end 553 b of the engaging member 553 is inserted into the engaged portion 552 . Therefore, the rotating shaft 540 abuts against the other end 553b of the engaging member 553 and is restrained from rotating.

When mounting the winding shaft 521, the winding shaft 521 is inserted into the insertion hole 540a of the rotating shaft 540 as indicated by arrow C in FIG. 7(a). Then, the winding shaft 521 presses the sliding member 554, and the sliding member 554 moves toward the engaging member 553 as shown in FIG. 7(b). When the upper end 554 a of the sliding member 554 contacts the other end 553 b of the engaging member 553 , the engaging member 553 slides away from the locked portion 552 .

When the take-up shaft 521 is completely inserted into the insertion hole 540a and attached to the rotating shaft 540, the upper end 554a of the sliding member 554 pushes the other end 553b of the engaging member 553 completely outward of the rotating shaft 540. Therefore, the other end 553b of the engaging member 553 is disengaged from the engaged portion 552 and accommodated in the engaging portion 551, and the rotating shaft 540 becomes rotatable.

(Effect of the fifth embodiment)
As described above, according to the present embodiment, the sliding member 554 for moving the engaging member 553 is arranged axially slidably on the rotating shaft 540 , so that the engaging member 553 is reliably moved by the sliding member 554 . can be slid to Further, when the winding shaft 521 is attached to the rotating shaft 540, one end 553a of the engaging member 553 protrudes upward so that the state of the engaging member 553 can be visually observed from the outside. It can be grasped that it is completely attached to 540.

Although the preferred embodiments of the present invention have been described above with reference to the accompanying drawings, it goes without saying that the present invention is not limited to such examples. It is obvious that a person skilled in the art can conceive of various modifications or modifications within the scope described in the claims, and these also belong to the technical scope of the present invention. Understood.

For example, in the above embodiments, the switching means is an engaging member capable of locking or unlocking the locking portion provided on the case fixed to the bracket and the locked portion provided on the rotating shaft. However, the present invention is not limited to this example. If the switching means is capable of switching such that the rotation of the rotating shaft is restricted when the winding shaft is not attached to the rotating shaft, and the rotation of the rotating shaft is permitted when the winding shaft is attached to the rotating shaft. , can be arbitrarily designed.

In addition, in the first embodiment, the engaging member 153 is rotatably connected to the rotating shaft 140, and when the winding shaft 121 is attached to the rotating shaft 140, the engaging member 153 contacts and engages the winding shaft 121. Although it is configured to rotate in the direction in which the engagement with the stop portion 151 is released, the present invention is not limited to this example. If the switching means is capable of switching such that the rotation of the rotating shaft is restricted when the winding shaft is not attached to the rotating shaft, and the rotation of the rotating shaft is permitted when the winding shaft is attached to the rotating shaft. good. For example, it can be arbitrarily designed such that the engagement member slides in the axial direction of the rotating shaft to switch between rotation restriction and rotation. The same applies to the second and third embodiments.

Further, in the second embodiment, the operation-side bracket 210-1 is supported by the support member 211 attached to the mounting target, and the operation-side bracket 210-1 and the support member 211 are configured to be relatively movable. However, the invention is not limited to this example. Any design can be used as long as the position of the operation side bracket with respect to the winding shaft can be changed.

In addition, in the third embodiment, eight locking portions 351 of the first case 360 are provided in the rotation direction of the rotating shaft 340, but the present invention is not limited to this example, and the locking portions 351 are Any number can be designed.

In addition, in the fourth embodiment, the winding shaft 421 is provided with the pressing piece 421a that presses the engaging member 453 so as to slide, but the present invention is not limited to this example. It can be designed arbitrarily as long as it is configured to press the engaging member so as to slide.

In addition, in the fifth embodiment, the switching means 550 includes the sliding member 554 that is disposed on the locked portion 552 of the rotating shaft 540 and slides in the axial direction. 540, the sliding member 554 slides in the axial direction to slide the engaging member 553 away from the locked portion 552, but the present invention is not limited to this example. .

The contents of the embodiments, modified examples, and application examples described above can be implemented in appropriate combinations.

100, 200, 300, 400, 500 Roll screen 110 Bracket 110-1, 210-1, 310-1 Operation side bracket 110-2 Non-operation side bracket 120 Winding pipe 121, 221, 321, 421, 521 Winding shaft 130 screen 131 weight bar 140, 240, 340, 440, 540 rotating shaft 140a, 440a, 540a insertion hole 150, 450, 550 switching means 151, 351, 451, 551 locking portion 152, 452, 552 locked portion 153 , 353, 453, 553 Engagement member 153a, 453a, 553a One end 153b, 453b, 553b Other end 160, 360, 460 First case 161 Second case 162 Pulley 163 Operation chain 164 First connection member 165 Second connection Member 166 Clutch spring 167 Clutch drum 211 Support member 210-1a, 211b Position adjustment means 211a Recess 421a Pressing piece 540b Bottom 540c Opening 552a Entrance side end 554 Sliding member 554a Upper end

Claims (9)

a bracket;
a winding pipe rotatably supported by the bracket;
a screen one end of which is connected to the winding pipe so as to be wound up and unwound;
a rotating shaft rotatably supported by the bracket;
a winding shaft that rotates integrally with the winding pipe and that rotates integrally with the rotating shaft by being mounted on the rotating shaft;
The rotation of the rotating shaft is restricted when the winding shaft is not attached to the rotating shaft, and the rotation of the rotating shaft is permitted when the winding shaft is attached to the rotating shaft. a switching means;
A roll screen, comprising: The switching means is
a locking portion provided on a case fixed to the bracket;
a locked portion that is provided on the rotating shaft and can be locked to the locking portion;
an engaging member that can be engaged with the locking portion and the locked portion and can lock or unlock the locking portion and the locked portion;
consists of
The engaging member restricts rotation of the rotating shaft when the engaging portion and the engaged portion are engaged, and restricts rotation of the rotating shaft when the engaging portion and the engaged portion are released from engagement. A roll screen according to claim 1, characterized in that it allows rotation. The engaging member is rotatably connected to the rotating shaft, and when the winding shaft is attached to the rotating shaft, the engaging member comes into contact with the winding shaft to release the engagement with the locking portion. 3. The roll screen according to claim 2, wherein the roll screen rotates in the direction in which the roll screen rotates. The roll screen according to claim 2 or 3, wherein a plurality of the locking portions are provided in the rotating direction of the rotating shaft. The engaging member is provided in the case so as to be movable in a radial direction of the rotating shaft,
The engaging member is inserted through the locking portion so as to be insertable into and removable from the locked portion, and when inserted into the locked portion, engages the locking portion and the locked portion. 3. The roll screen according to claim 2, wherein the locking portion and the locked portion are unlocked when the screen is stopped and separated from the locked portion. 6. The roll screen according to claim 5, wherein the winding shaft is provided with a pressing piece that presses the engaging member so as to separate from the engaged portion. The switching means includes a sliding member disposed on the rotating shaft and sliding in the axial direction. When the winding shaft is attached to the rotating shaft, the sliding member slides in the axial direction. 6. The roll screen according to claim 5, wherein the engaging member is disengaged from the engaged portion. Further comprising a support member fixed to the roll screen mounting target,
The roll screen according to any one of claims 1 to 7, wherein the bracket is supported by the support member so as to be relatively movable. a bracket;
a winding pipe rotatably supported by the bracket;
a screen one end of which is connected to the winding pipe so as to be wound up and unwound;
A roll screen comprising
a winding shaft integrally rotated with the winding pipe and rotatably mounted on the bracket;
a switching means capable of switching such that the rotation of the winding shaft is restricted when the winding shaft is not attached to the bracket, and the rotation of the winding shaft is permitted when the winding shaft is attached; ,
A roll screen, comprising:

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